Nisus Email lets you use your favorite writing tool (a word processor or text editor) to prepare and manage all your e-mails. Its sending and receiving e-mail functions are well separated, so, if preferred, it can be used to enhance and speedup the sending of e-mail, while leaving e-mail receiving to the other program.
A Mac OS X version is now available. The update also adds better automatic conversion of HTML to plain text; SMTP authorization supported is supported; and now incoming e-mails with foreign character set encodings are automatically displayed in the proper font whenever possible.
Nisus Email 1.6.1 comes in both Classic Mac OS and Mac OS X versions and is a free upgrade for registered users. Everyone else can purchase the product for US$24.95 ($5 off the regular price) from now through June 3. The e-mail application is available as a 14-day demo version.